diff --git a/lib/manager.js b/lib/manager.js
index da8376f08..1b5a0f2f9 100644
--- a/lib/manager.js
+++ b/lib/manager.js
@@ -73,7 +73,9 @@ function Manager(uri, opts){
 Manager.prototype.emitAll = function() {
   this.emit.apply(this, arguments);
   for (var nsp in this.nsps) {
-    this.nsps[nsp].emit.apply(this.nsps[nsp], arguments);
+    if (this.nsps.hasOwnProperty(nsp)) {
+      this.nsps[nsp].emit.apply(this.nsps[nsp], arguments);
+    }
   }
 };
 
@@ -85,7 +87,9 @@ Manager.prototype.emitAll = function() {
 
 Manager.prototype.updateSocketIds = function(){
   for (var nsp in this.nsps) {
-    this.nsps[nsp].id = this.engine.id;
+    if (this.nsps.hasOwnProperty(nsp)) {
+      this.nsps[nsp].id = this.engine.id;
+    }
   }
 };